i have the same problem. 1 day wasted time trying different things...nothing worked! with wp 2.4.8 and postie 1.3.3
downloaded postie 1.3.2 and everything worked fine!!!
with version 1.3.3 it only works, if if start postie manually when i'm logged in as admin in wordpress. if i start it as cron-job (doesn't matter weather i use lynx or other tec.) it doesn't work if i use attachments. without attachments it is fine with the newest version. i'll get a draft post with def. values (tmpTitle, tmpText,..), the output from lynx is like (it seems like parsing stops, when reaching the attachments):
xxxx@asterix:~> lynx --source http://xxxx.kiwi.at/~xxxx/wp-content/plugins/postie/get_mail.php
This is the postie plugin
Last Changed Date: 2009-09-01 00:28:24 -0400 (Tue, 01 Sep 2009)
Connecting to xxxx.kiwi.at:110 (pop3))
Mission complete, message 1 deleted.
memory at start of e-mail processing:15716476
Confirming Access For email@example.com
firstname.lastname@example.org is authorized to post as the administrator
adminUser='xxxx'<p>Message Id is :<D68345711987B94680F84033BF46C8BC4FF7D32E60@mec6.mec.at></p>
<p>Email has following attachments:</p>primary= multipart, secondary = mixed
primary= text, secondary = plain
primary= image, secondary = jpeg